Nokia has suggested that it may consider using another mobile operating system to make itself more competitive, as it reported mixed fourth-quarter results and a weak first-quarter outlook.

Nokia's market share was 32 percent in mobile devices in 2010, down from 34 percent in 2009. Nokia's fourth-quarter sales were €12.7bn (£11bn), up six percent from a year ago. Fourth-quarter profit was €745m, down from €948m a year ago. The company also projected first-quarter profit margins of between seven and 10 percent, down from 11 percent in 2009.